Steam waste heat recycling device

Abstract

The utility model discloses a steam waste heat recycling device which comprises a waste heat recycling kettle, an upper partition plate and a lower partition plate are arranged in the waste heat recycling kettle, the interior of the waste heat recycling kettle is divided into a first cavity, a second cavity and a third cavity by the lower partition plate and the upper partition plate, a central pipe is connected between the upper partition plate and the lower partition plate, and a spiral blade is arranged on the central pipe. The spiral blade divides the second cavity into a spiral channel, one end of the spiral channel is provided with a first fluid inlet, and the other end of the spiral channel is provided with a first fluid outlet. Heat exchange pipes arranged in an annular array around the axis of the central pipe are connected between the upper partition plate and the lower partition plate, the heat exchange pipes further penetrate through the spiral blades, first heat exchange elbows for connecting the adjacent heat exchange pipes in series are arranged in the first cavity, and second heat exchange elbows for connecting the adjacent heat exchange pipes in series are arranged in the third cavity. And the waste heat recovery kettle is provided with a steam inlet and a steam outlet. The waste heat recycling device has the advantages of being high in heat energy recycling rate, environmentally friendly, complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of heat energy recovery, and more specifically, it relates to a device for recycling waste heat of steam. Background Art

[0002] High-temperature steam contains a large amount of heat energy. If the steam is directly discharged, it will not only waste energy but also be harmful to the environment. Accordingly, the utility model provides a device for recycling waste heat of steam. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, and provide a device for recycling waste heat of steam, which has the characteristics of high heat energy recovery utilization rate and environmental friendliness.

[0004] To solve the above technical problems, the purpose of the utility model is realized as follows: A device for recycling waste heat of steam according to the utility model includes a waste heat recovery kettle. An upper partition and a lower partition are arranged in the waste heat recovery kettle. The lower partition and the upper partition divide the interior of the waste heat recovery kettle into a first chamber, a second chamber and a third chamber. A central tube is connected between the upper partition and the lower partition. The upper end of the central tube passes through the upper partition and extends into the first chamber, and the lower end passes through the lower partition and extends into the third chamber. A spiral blade is spirally arranged on the central tube and is located inside the second chamber. The outer side surface of the spiral blade is connected to the inner wall of the waste heat recovery kettle. The spiral blade divides the second chamber into a spiral channel coiling around the central tube. One end of the spiral channel is provided with a first fluid inlet opened on the waste heat recovery kettle, and the other end is provided with a first fluid outlet opened on the waste heat recovery kettle.

[0005] A number of heat exchange tubes are also connected between the upper partition and the lower partition. The upper ends of the heat exchange tubes pass through the upper partition and extend into the first chamber, and the lower ends pass through the lower partition and extend into the third chamber. The heat exchange tubes are arranged in an annular array around the axis of the central tube. The heat exchange tubes also pass through the spiral blade. A first heat exchange elbow for connecting adjacent heat exchange tubes in series is arranged in the first chamber. A second heat exchange elbow for connecting adjacent heat exchange tubes in series is arranged in the third chamber. A steam inlet with one end extending out of the kettle and the other end connected to the heat exchange tubes is provided on the waste heat recovery kettle. A steam outlet with one end extending out of the kettle and the other end connected to the heat exchange tubes is provided on the waste heat recovery kettle.

[0006] A second fluid inlet connected to the first chamber is provided at the top of the waste heat recovery kettle. A second fluid outlet connected to the third chamber is provided at the bottom of the waste heat recovery kettle.

[0007] The utility model is further arranged as follows: Heat exchange fins are arranged on the outer walls of the first heat exchange elbow and the second heat exchange elbow.

[0008] The present utility model is further configured such that the included angles between adjacent two of the heat exchange tubes are equal.

[0009] The present utility model is further configured such that a discharge pipe is provided on the second fluid outlet.

[0010] The present utility model is further configured such that a valve is connected in series on the discharge pipe.

[0011] In summary, the present utility model has the following beneficial effects: The steam waste heat recovery device involved in the present utility model has the heat exchange elbows for controlling the rotation of the heat exchange tubes built therein, and is paired with a chamber for exchanging this part of heat energy, so that the heat exchange tubes and the heat exchange elbows are not exposed, effectively improving the heat exchange efficiency, having a high heat energy recovery utilization rate, being green and environmentally friendly, having a complete overall function, and being highly practical. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the present utility model. Detailed Embodiments

[0013] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the preferred implementation schemes of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0014] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.

[0015] Embodiment 1

[0016] Refer to Figure 1 As shown, a steam waste heat recovery device involved in this embodiment includes a waste heat recovery kettle 1. An upper partition plate 2 and a lower partition plate 3 are provided inside the waste heat recovery kettle 1. The lower partition plate 3 and the upper partition plate 2 divide the interior of the waste heat recovery kettle 1 into a first chamber 4, a second chamber 5, and a third chamber 6. A central pipe 7 is connected between the upper partition plate 2 and the lower partition plate 3. The upper end of the central pipe 7 passes through the upper partition plate and extends into the first chamber, and the lower end passes through the lower partition plate and extends into the third chamber. A spiral blade 8 is spirally arranged on the central pipe 7 inside the second chamber. The outer side surface of the spiral blade 8 is connected to the inner wall of the waste heat recovery kettle 1. The spiral blade 8 divides the second chamber 5 into a spiral channel (not marked) that coils around the central pipe 7. One end of the spiral channel is provided with a first fluid inlet 9 opened on the waste heat recovery kettle 1, and the other end is provided with a first fluid outlet 10 opened on the waste heat recovery kettle 1.

[0017] Between the upper partition plate 2 and the lower partition plate 3, a number of heat exchange tubes 11 are also connected. The upper ends of the heat exchange tubes 11 pass through the upper partition plate and extend into the first chamber, and the lower ends pass through the lower partition plate and extend into the third chamber. The heat exchange tubes 11 are arranged in an annular array around the axis of the central tube 7. The heat exchange tubes 11 also pass through the spiral blades 8. In the first chamber 4, a first heat exchange elbow 12 for connecting adjacent heat exchange tubes in series is provided. In the third chamber 6, a second heat exchange elbow 13 for connecting adjacent heat exchange tubes in series is provided. On the waste heat recovery kettle 1, there is a steam inlet 14 with one end extending out of the kettle and the other end connected to the heat exchange tube, and a steam outlet 15 with one end extending out of the kettle and the other end connected to the heat exchange tube.

[0018] At the top of the waste heat recovery kettle 1, there is a second fluid inlet 16 connected to the first chamber 4, and at the bottom of the waste heat recovery kettle 1, there is a second fluid outlet 17 connected to the third chamber 6.

[0019] Further, the included angles between adjacent heat exchange tubes 11 are equal.

[0020] Further, on the second fluid outlet 17, there is a discharge pipe (not shown), and a valve (not shown) is connected in series on the discharge pipe.

[0021] In this embodiment, by storing standby water in the first chamber 4 and the third chamber 6 and replacing it after its temperature rises to a predetermined value, the heat energy exchanged on the first heat exchange elbow 12 and the second heat exchange elbow 13 is captured. By sending steam into the steam inlet 14 and discharging it from the steam outlet 15 after passing through all the mutually connected heat exchange tubes 11, during this period, the heat energy contained in the steam is captured by the water flowing in the second chamber 5. The water capturing the heat energy is input from the first fluid inlet 9 and output from the first fluid outlet 10, flowing along the spiral channel in the middle and contacting the heat exchange tubes 11 multiple times to exchange heat energy.

[0022] Embodiment 2

[0023] See Figure 1 As shown, a steam waste heat recovery device involved in this embodiment is further provided, on the basis of Embodiment 1, that heat exchange fins (not shown) are provided on the outer walls of the first heat exchange elbow 12 and the second heat exchange elbow 13.

[0024] In this embodiment, by providing heat exchange fins (not shown) on the first heat exchange elbow 12 and the second heat exchange elbow 13, the contact area with the fluid is increased, and heat conduction is accelerated.

[0025] The steam waste heat recovery device involved in the present utility model has the heat exchange elbows for controlling the rotation of the heat exchange tubes built-in, and is paired with the chambers for exchanging this part of heat energy, so that the heat exchange tubes and the heat exchange elbows are not exposed, effectively improving the heat exchange efficiency, having a high heat energy recovery utilization rate, being green and environmentally friendly, with a perfect overall function and strong practicability.

[0026] Unless otherwise specified, in this utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc., the orientation or positional relationship indicated is based on the actual orientation or positional relationship shown. It is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the orientation or positional relationship in this utility model are only for illustrative purposes and cannot be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific circumstances.

[0027] Unless otherwise clearly defined and limited, in this utility model, if there are terms such as "arranged", "connected" and "coupled", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0028] The above has described in detail the preferred specific embodiments of this utility model. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of this utility model without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in this technical field based on the concept of this utility model through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A steam waste heat recycling device, comprising a waste heat recovery kettle, characterized in that: The waste heat recovery kettle is provided with an upper partition plate and a lower partition plate inside. The lower partition plate and the upper partition plate divide the interior of the waste heat recovery kettle into a first chamber, a second chamber and a third chamber. A central pipe is connected between the upper partition plate and the lower partition plate. The upper end of the central pipe passes through the upper partition plate and extends into the first chamber, and the lower end passes through the lower partition plate and extends into the third chamber. A spiral blade arranged inside the second chamber is spirally arranged on the central pipe. The outer side surface of the spiral blade is connected to the inner wall of the waste heat recovery kettle. The spiral blade divides the second chamber into a spiral channel coiling around the central pipe. One end of the spiral channel is provided with a first fluid inlet opened on the waste heat recovery kettle, and the other end is provided with a first fluid outlet opened on the waste heat recovery kettle; A plurality of heat exchange pipes are also connected between the upper partition plate and the lower partition plate. The upper ends of the heat exchange pipes pass through the upper partition plate and extend into the first chamber, and the lower ends pass through the lower partition plate and extend into the third chamber. The heat exchange pipes are arranged in an annular array around the axis of the central pipe. The heat exchange pipes also pass through the spiral blade. A first heat exchange elbow for connecting adjacent heat exchange pipes in series is arranged in the first chamber. A second heat exchange elbow for connecting adjacent heat exchange pipes in series is arranged in the third chamber. The waste heat recovery kettle is provided with a steam inlet with one end extending out of the kettle and the other end connected to the heat exchange pipe. The waste heat recovery kettle is provided with a steam outlet with one end extending out of the kettle and the other end connected to the heat exchange pipe; The top of the waste heat recovery kettle is provided with a second fluid inlet connected to the first chamber, and the bottom of the waste heat recovery kettle is provided with a second fluid outlet connected to the third chamber.

2. The steam waste heat recovery device according to claim 1, wherein: Heat exchange fins are arranged on the outer walls of the first heat exchange elbow and the second heat exchange elbow.

3. The steam waste heat recovery device according to claim 1 or 2, characterized in that: The included angles between adjacent two of the heat exchange pipes are equal.

4. The steam waste heat recovery device according to claim 1, wherein: A discharge pipe is arranged on the second fluid outlet.

5. The steam waste heat recovery device according to claim 4, wherein: A valve is connected in series on the discharge pipe.

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